Category: Stoichiometry

“The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes”. This is the _____________ law?

Hamad Stoichiometry 15/11/2020

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A. Dalton’s
B. Amagat’s
C. Gay-Lussac’s
D. Avogadro’s

Refractories used in/for ______________ should have low thermal conductivity?

Hamad Stoichiometry 11/11/2020

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A. Coke ovens
B. Insulation
C. Regenerators
D. Muffle furnaces

The unit of Cp in S.I. units is___________________?

Hamad Stoichiometry 08/11/2020

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A. W/m2.°K
B. J/kg.°K
C. W/m.°K
D. J/m3. °K

One micron is equal to _____________ cm?

Hamad Stoichiometry 07/11/2020

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A. 10-2
B. 10-4
C. 10-6
D. 10-8

Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of ______________ °C?

Hamad Stoichiometry 02/11/2020

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A. 770
B. 570
C. 270
D. 70

80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?

Hamad Stoichiometry 31/10/2020

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A. 0.00
B. 0.18
C. 0.24
D. 1.00

Fireclay bricks are not used in the_________________?

Hamad Stoichiometry 31/10/2020

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A. Blast furnace
B. Hot blast stove
C. Cupola
D. Wall of coke oven

The latent heat of vaporisation__________________?

Hamad Stoichiometry 28/10/2020

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A. Decreases with increased temperature
B. Decreases as pressure increases
C. Becomes zero at the critical point
D. All A., B. & C.

1 ata is equivalent to_________________?

Hamad Stoichiometry 23/10/2020

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A. 1 atm
B. 10 torr
C. 0.98 Pascal
D. 1 kgf/cm2

Atomic ______________ of an element is a whole number?

Hamad Stoichiometry 22/10/2020

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A. Weight
B. Number
C. Volume
D. Radius